Date: Sat, 18 Dec 2010 13:31:47 -0600 From: Thomas Donnelly <tad1214@aol.com> To: Eugene Grosbein <egrosbein@rdtc.ru> Cc: "net@freebsd.org" <net@freebsd.org> Subject: Re: lagg/lacp poor traffic distribution Message-ID: <E2BD5AE7-6A15-4FD9-A4B3-C0E14606DE02@aol.com> In-Reply-To: <4D0CFEFF.3000902@rdtc.ru> References: <4D0CFEFF.3000902@rdtc.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
On Dec 18, 2010, at 12:35 PM, Eugene Grosbein <egrosbein@rdtc.ru> wrote: > Hi! >=20 > I've loaded router using two lagg interfaces in LACP mode. > lagg0 has IP address and two ports (em0 and em1) and carry untagged frames= . > lagg1 has no IP address and has two ports (igb0 and igb1) and carry > about 1000 dot-q vlans with lots of hosts in each vlan. >=20 > For lagg1, lagg distributes outgoing traffic over two ports just fine. > For lagg0 (untagged ethernet segment with only 2 MAC addresses) > less than 0.07% (54Mbit/s max) of traffic goes to em0 > and over 99.92% goes to em1, that's bad. >=20 > That's general traffic of several thousands of customers surfing the web, > using torrents etc. I've glanced over lagg/lacp sources if src/sys/net/ > and found nothing suspicious, it should extract and use srcIP/dstIP for ha= sh. >=20 > How do I debug this problem? >=20 > Eugene Grosbein I'm not familiar with the freebsd implementation but Cisco load balances bas= ed on destination Mac address so If everything is headed towards the gateway= , they will all go over one link. Check the load balancing algorithm on both= sides. I usually balance on src+dst mac.=20 -=3DTom > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E2BD5AE7-6A15-4FD9-A4B3-C0E14606DE02>